/Engine/Source/Runtime/Core/Public/Math/Quat.h
Order matters when composing quaternions: C = A * B will yield a quaternion C that logically first applies B then A to any subsequent transformation (right first, then left).
The result of multiplication (this * Q).
[TQuat](API\Runtime\Core\Math\TQuat)< T > operator* ( const [TQuat](API\Runtime\Core\Math\TQuat)< T > & Q ) const